NEW YORK (AP) — Attention, Florida Panthers fans: Throwing those toy rats on the ice during a game means drawing the ire of NHL Commissioner Gary Bettman.

Days after fans in Philadelphia threw light-up wristbands onto the ice during a Flyers playoff loss, Bettman said the league strongly discourages throwing anything onto the ice except for hats to celebrate a hat trick.

That includes playoff traditions of faux rats in Florida and real octopi in Detroit.

''Putting aside the hat trick, we don't think it's a good idea for fans to be throwing things on the ice for a whole host of reasons.'' Bettman said Friday at a meeting of the Associated Press Sports Editors. ''We don't think it's appropriate, other than the case of the hat trick, to throw things on the ice. Not only is it disruptive to the game, it's potentially dangerous.''

Bettman was at Wells Fargo Center in Philadelphia on Monday when fans threw hundreds of wristbands on the ice during the third period of a 6-1 loss to the Washington Capitals. The commissioner called it an unfortunate incident, especially considering the wristbands were part of a pregame tribute to late founder Ed Snider.

When Panthers fans threw rats onto the ice during a March 31 game against the New Jersey Devils, the team was given two minor penalties for delay of game, a rule the NHL put in to cut down on such events. Bettman said he spoke to the team's executive chairman, Peter Luukko, immediately to express his concern about a tradition that dates to Florida's Stanley Cup Final run in 1996.

Detroit's octopus tradition goes back much further, but that doesn't mean it's league-approved.

''An occasional octopus, I'm not justifying it, is certainly different than 10,000 rats,'' Bettman said. ''They do a good job at Joe Louis (Arena) of getting the octopi off the ice as quickly as possible. And they don't swing it around anymore because you can get octopus goop on the ice or on a player's jersey.''

That won't be a problem until at least next spring, as the Red Wings were eliminated Thursday night. The NHL told the Panthers that fans can throw toy rats on the ice only after a game.

Bettman and deputy commissioner Bill Daly touched on other topics during the hour-long meeting:

NO TOLERANCE FOR INTOLERANCE: After Chicago Blackhawks forward Andrew Shaw was suspended a game for using a gay slur, Bettman said the league has tried to ''raise the consciousness'' about those kinds of issues. Daly said the league educates players and specifically rookies about the subject and sent out a memo before the season to make them aware of what's not appropriate to say. Shaw apologized the next day.

''If you focus on the quotes that the players gave after the incident, there's an awareness and a greater awareness on the subject than ever before,'' Bettman said. ''And I think even Andrew's response was an acknowledgement of that. Perhaps this was a teaching moment.''

COACH'S CHALLENGES: Bettman defended the league against criticism of the new coach's challenge system that has been at the center of controversy in a handful of playoff games. Bettman believes plays that are offside by even the slightest amount should be subject to review.

''We're trying to get it right,'' Bettman said. ''And in the playoffs, you look at how close the games are. The Chicago-St. Louis series, they've played 96 percent of the time either tied or within a goal. Every goal matters.''

UPPER- AND LOWER-BODY INJURIES: At playoff time, seemingly every banged-up player is day-to-day with an upper- or a lower-body injury. Don't expect that to change.

Bettman and Daly said neither the league nor the players' union has any interest in altering the injury disclosure policy. Teams must report all injuries, including concussions, to the NHL, but Bettman said it's not in players' interests to open themselves up to in-game harm from opponents knowing what's wrong with them.

EXPANSION: There was nothing new on expansion, which Bettman again repeated wasn't a guarantee for 2017-18 or at all. Las Vegas and Quebec City are the only cities in consideration for expansion, which has no timetable but for now also no opportunity for Seattle to join the fray.

''What's new in Seattle on a building?'' Bettman asked. ''Even if you told me they were under construction tomorrow, it wouldn't impact this process.''

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Stephen Whyno can be reached at http://www.twitter.com/swhyno

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